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Fear-related processing in the amygdala has been well documented, but its role in signaling other emotions remains controversial. The authors recovered signal loss in the amygdala at high-field strength using an inward spiral pulse sequence and probed its response to pictures varying in their degree of portrayed sadness. These pictures were presented as intermittent task-irrelevant distractors during a concurrent visual oddball task. Relative to neutral distractors, sad distractors elicited greater activation along ventral brain regions, including the amygdala, fusiform gyrus, and inferior frontal gyrus. In contrast, oddball targets engaged dorsal sectors of frontal, parietal, and cingulate cortices. The amygdala's role in emotional evaluation thus extends to images of grief and despair as well as to those depicting violence and threat. 相似文献
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Using data from a national survey (N = 6,979) of young people in their last year in Norwegian secondary schools in 2007 (aged 18 and 19), this paper examines the effect of experience of violence including sexual abuse during childhood (before the age of 13) on the later academic achievement of young people. This investigation includes three types of violence: non-physical, physical and sexual, and two types of victimisation: being abused and witness to abuse. First we investigate the relationship between the experience of various violent acts before the age of 13 and young people??s later academic achievement. Second, applying the structural equation modelling technique, we take into account the effect of background factors such as parents?? educational attainment and gender, and the effect of mediating factors such as social capital and educational motivation on the academic achievement of the young victims. The results show that exposure to violence during childhood not only directly influences young people??s educational outcomes but also exerts indirect influences on their achievement through its impact on young victims?? social relations and psychological health. 相似文献
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Schmitz A Merikangas K Swendsen H Cui L Heaton L Grillon C 《Journal of experimental child psychology》2011,110(2):159-170
Research has highlighted the need for new methods to assess emotions in children on multiple levels to gain better insight into the complex processes of emotional development. The startle reflex is a unique translational tool that has been used to study physiological processes during fear and anxiety in rodents and in human participants. However, it has been challenging to implement developmentally appropriate startle experiments in children. This article describes a procedure that uses predictable and unpredictable aversive events to distinguish between phasic fear and sustained anxiety in children and adolescents. We investigated anxious responses, as measured with the startle reflex, in youths (N = 36, mean age = 12.63 years, range = 7-17) across three conditions: no aversive events (N), predictable aversive events (P), and unpredictable aversive events (U). Short-duration cues were presented several times in each condition. Aversive events were signaled by the cues in the P condition but were presented randomly in the U condition. Participants showed fear-potentiated startle to the threat cue in the P condition. Startle responses were also elevated between cues in the U condition compared with the N condition, suggesting that unpredictable aversive events can evoke a sustained state of anxiety in youths. This latter effect was influenced by sex, being greater in girls than in boys. These findings indicate the feasibility of this experimental induction of the startle reflex in response to predictable and unpredictable events in children and adolescents, enabling future research on interindividual differences in fear and anxiety and their development in youths. 相似文献
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Psychometrika - The inverse probability of treatment weighted (IPTW) estimator can be used to make causal inferences under two assumptions: (1) no unobserved confounders (ignorability) and (2)... 相似文献
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采用拟人化配声和对形容词进行性别倾向评定的方法,对小学生对无性别事物的性别编码进行了研究。结果表明:(1)小学生对无性别事物存在着性别编码倾向,而且相当稳定。这种倾向一年级时已经基本形成,传统文化和生活经验会加强这种倾向。(2)小学生对无性别事物的性别编码总体趋势一致,但也存在一定的年级差异。随年级增长,将雌性倾向事物划分为女性的比率在增长,将雄性倾向事物划分为男性的比率也在增长。(3)小学生对无性别事物的性别编码也具有性别差异。男生和女生存在以自身性别为中心的倾向。男生更多地看到中性事物的男性特征,女生更多地注意到中性事物的女性特征。与男生相比,女生性别编码的倾向更强些。 相似文献
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教师期望对学生学业成绩的影响 总被引:12,自引:0,他引:12
采用教师期望评定量表、中学生学业成就动机量表,就教师期望对学生学业成绩影响的问题进行了问卷调查和数量分析。结果表明:教师期望通过影响学生的学习能力感和学业成就动机,影响学生的学业成绩;学生学业成绩的变化,对教师期望水平及其自身的学习能力感和学业成就动机也有影响;学生学习能力感和学业成就动机之间存在着互动的关系。 相似文献